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All results from a given calculation for HCOOC2H5 (Ethyl formate)

using model chemistry: PBEPBEultrafine/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS trans 1A'
Energy calculated at PBEPBEultrafine/6-311G*
 hartrees
Energy at 0K-268.132375
Energy at 298.15K-268.139441
HF Energy-268.132375
Nuclear repulsion energy176.471611
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBEultrafine/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3056 3024 24.82      
2 A' 2989 2958 16.19      
3 A' 2982 2951 16.94      
4 A' 2947 2916 85.93      
5 A' 1760 1742 275.62      
6 A' 1483 1468 8.59      
7 A' 1466 1450 3.01      
8 A' 1386 1372 18.17      
9 A' 1355 1341 0.37      
10 A' 1350 1336 3.06      
11 A' 1154 1142 341.96      
12 A' 1107 1095 14.89      
13 A' 1009 998 24.19      
14 A' 831 823 11.14      
15 A' 770 762 1.08      
16 A' 370 366 5.81      
17 A' 220 217 6.20      
18 A" 3063 3032 39.35      
19 A" 3026 2995 8.83      
20 A" 1456 1441 8.89      
21 A" 1266 1253 0.90      
22 A" 1145 1134 4.36      
23 A" 979 969 0.05      
24 A" 788 780 1.23      
25 A" 352 348 18.51      
26 A" 236 233 1.74      
27 A" 54 53 0.61      

Unscaled Zero Point Vibrational Energy (zpe) 19299.8 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 19099.1 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBEultrafine/6-311G*
ABC
0.58856 0.09537 0.08470

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.188 -0.268 0.000
C2 -0.704 -0.568 0.000
O3 0.000 0.709 0.000
C4 1.348 0.622 0.000
O5 2.000 -0.397 0.000
H6 -2.762 -1.208 0.000
H7 -2.476 0.309 0.891
H8 -2.476 0.309 -0.891
H9 -0.391 -1.140 -0.888
H10 -0.391 -1.140 0.888
H11 1.764 1.651 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51442.39673.64634.19071.10081.09991.09992.18602.18604.3935
C21.51441.45802.37172.70972.15512.16842.16841.10131.10133.3186
O32.39671.45801.35032.28543.36182.66152.66152.08752.08751.9995
C43.64632.37171.35031.20984.49843.93833.93832.62942.62941.1099
O54.19072.70972.28541.20984.83084.61814.61812.65662.65662.0612
H61.10082.15513.36184.49844.83081.78231.78232.53272.53275.3529
H71.09992.16842.66153.93834.61811.78231.78263.09992.53864.5353
H81.09992.16842.66153.93834.61811.78231.78262.53863.09994.5353
H92.18601.10132.08752.62942.65662.53273.09992.53861.77543.6356
H102.18601.10132.08752.62942.65662.53272.53863.09991.77543.6356
H114.39353.31861.99951.10992.06125.35294.53534.53533.63563.6356

picture of Ethyl formate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.458 C1 C2 H9 112.424
C1 C2 H10 112.424 C2 C1 H6 109.980
C2 C1 H7 111.091 C2 C1 H8 111.091
C2 O3 C4 115.185 O3 C2 H9 108.500
O3 C2 H10 108.500 O3 C4 O5 126.340
O3 C4 H11 108.336 O5 C4 H11 125.323
H6 C1 H7 108.162 H6 C1 H8 108.162
H7 C1 H8 108.252 H9 C2 H10 107.416
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.657      
2 C -0.268      
3 O -0.238      
4 C 0.140      
5 O -0.296      
6 H 0.223      
7 H 0.228      
8 H 0.228      
9 H 0.228      
10 H 0.228      
11 H 0.184      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.959 0.448 0.000 2.010
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.038 4.583 0.000
y 4.583 -29.603 0.000
z 0.000 0.000 -29.519
Traceless
 xyz
x -3.477 4.583 0.000
y 4.583 1.675 0.000
z 0.000 0.000 1.802
Polar
3z2-r23.604
x2-y2-3.434
xy4.583
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.683 0.293 0.000
y 0.293 6.137 0.000
z 0.000 0.000 4.631


<r2> (average value of r2) Å2
<r2> 137.208
(<r2>)1/2 11.714